The City of Arcadia


With its proximity to Los Angeles and large event venues, the City of Arcadia wanted a better way to respond to both expected and unexpected traffic congestion. They partnered with TransCore and KLD Engineering, P.C. to install ACDSS as an integrated adaptive traffic signal control system that helps monitor traffic conditions and manage congestion in high traffic areas.

The project was completed in Aug 2015 at the beginning of the school season, which typically ushers in more traffic as children head back to school. The adaptive system is currently operational at 33 intersections along several of the major corridors within the City. In this project, McCain 2070 controllers are used, with a mix of McCain Omni eX firmware and ATS D4 firmware installed at local controllers. Existing loop detectors and video detectors are used to provide the needed volume and occupancy data. These 33 intersections are operated as three control areas for variable-objective adaptive signal operations (delay minimization, progression, or queue management), a concept unique to TransSuite/ACDSS, and critical for the successful implementation in a complex urban environment like Arcadia.

The city’s already heavy traffic is compounded by nearby activity centers, including the Santa Anita Race Track, the L.A. Arboretum, the Santa Anita Mall and Methodist Hospital. To address increased congestion in these areas, in 2005 the City developed an ITS Master Plan to integrate its traffic signal operations with the LA County Information Exchange, and participate in the San Gabriel Valley Traffic Forum project.